See awesome photos of construction on the Empire State Building

Warning: These mind-blowing shots of the in-progress Empire State Building, via Buzzfeed, could cause dizziness.

The under-construction Empire State BuildingPhotograph: Lewis Wickes Hine/New York Public Library

Get ready for spine-tingling chills courtesy of these stunning vintage shots of the Empire State Building under construction in the 1930s. (It seems that hard hats and harnesses weren't required when work on the 102-story building took place.) Take a look at the incredible photographs from the New York Public Library's digital collection, where you can see the city's fearless workers toiling, balancing and just hanging out over a dizzyingly distant Manhattan.